摘要
This study was conducted to determine the effect of feed additives including probiotics, moisture and feed ingredients and the effect of fermented feed on digestibility and volatile fatty acid (VFA) level in finishing pigs. Feed was mixed with microbials including Saccharomyces, Lactobacillus, Enterococcus and Pediococcus together with different levels of probiotics, 0.25, 0.5, 1, 2, 3%. Addition of probiotics showed improved fermentation rate after 48 h incubation. To determine the optimal moisture level for fermentation, different levels of water, 30, 40, 50 and 60%, were added into the feed. Fermentation rate of feed with 40~50% moisture level was higher than that from 60% level at 60 h post-fermentation. In vitro fermentation rate of feed ingredients was analyzed by comparing VFA levels. Beet pulp and tapioca showed higher fermentation rate compare to other ingredients including canola meal or rapeseed meal. To determine the effect of administration of fermented feed In vivo, feces from finishing pigs were analyzed. Finishing pigs administrated with fermented feed showed improved digestibility and higher volatile fatty acid (VFA) level. In conclusion, results from the current study indicate that 40~50% of moisture with addition of beet pulp and tapioca in feed is optimal condition for fermentation. Furthermore, our data suggest that fermentation of feed can improve the feed quality and digestibility, thereby provide more nutrient in finishing pigs.
摘要译文
本研究旨在确定饲料添加剂（包括益生菌，水分和饲料成分）的影响以及发酵饲料对肥育猪消化率和挥发性脂肪酸（VFA）水平的影响。饲料与微生物混合，包括酵母菌，乳杆菌，肠球菌和片球菌，以及不同水平的益生菌，0.25％，0.5％，1％，2％，3％。益生菌的添加显示培养48小时后发酵率提高。为了确定发酵的最佳水分含量，在饲料中加入不同水平的水，30％，40％，50％和60％。水分含量为40~50％的饲料发酵率高于发酵后60 h 60％的水平。通过比较VFA水平分析饲料成分的体外发酵速率。与包括双低菜粕或菜籽粕在内的其他成分相比，甜菜浆和木薯显示出更高的发酵速率。为了确定在体内给予发酵饲料的效果，分析了来自肥育猪的粪便。用发酵饲料饲养的育肥猪表现出改善的消化率和更高的挥发性脂肪酸（VFA）水平。总之，目前的研究结果表明，饲料中加入甜菜浆和木薯粉可使40~50％的水分成为发酵的最佳条件。此外，我们的数据表明，饲料发酵可以提高饲料质量和消化率，从而为肥育猪提供更多的营养。
Cho, S.B.; Kim, D.W.; Yang, S.H.; Park, K.H.; Choi, D.Y.; Yoo, Y.H.; Hwang, O.H.;. Establishment of Producing Conditions of Fermentation Feed for Swine[J]. Journal of Animal Environmental Science, 2012,18(3): 137-144